TM-5-5420-228-24

LAUNCHER HYDRAULICS SYSTEM M48A5/M60A1 TANK CHASSIS, TRANSPORTING: FOR BRIDGE, ARMORED-VEHICLE-LAUNCHED; SCISSORING TYPE, CLASS 60

TECHNICAL MANUAL; ORGANIZATIONAL, DIRECT SUPPORT AND GENERAL SUPPORT; MAINTENANCE MANUAL

AUGUST 1985

TM-5-5420-228-24 - Page 276 of 750

TM 5-5420-228-24

SEQUENCE VALVE (RV2) ADJUSTMENT (Sheet 1 of 1)

TOOLS:

3/16 in. socket head screw key

5/16 in. socket head screw key

9/16 in. open end wrench

SPECIAL TOOL: Gage, pressure (item 3, sec III, app B)

PERSONNEL:

Two

REFERENCE:

TM 5-5420-202-10

PRELIMINARY PROCEDURE:

Relieve hydraulic pressure (page 3-71)

QUADRANTS REMOVED FOR CLARITY

NOTE

If STE/lCE is available, go to STE/lCE Test 51

(page 2-47).

ADJUSTMENT:

1.

Using 5/16 inch screw key, remove plug (A).

Manually install pressure gage in opening

2.

left by removal of plug (A).

3.

Engage hydraulic pump (TM 5-5420-202-10).

4.

Set engine speed at 1800 rpm.

5.

Pull up on locking cylinder control

and ejection cylinder levers.

6.

Have second technician observe pressure gage

7.

8.

9.

10.

11.

12.

13.

14.

reading.

UNDER VALVE BANK

Return locking and ejection cylinder control levers to neutral position.

Remove adjusting screw cap (B) using wrench.

To adjust pressure, hold adjusting screw (C) with 3/16 inch screw key and use wrench

to loosen jamnut (D).

Using 3/1 6 inch screw key, turn adjusting screw (C) clockwise

to increase pressure or counterclockwise to decrease pressure.

Repeat steps 3 through 9 until pressure gage shows reading of 3200 ± 50 Ps

i

(22064±

340 kPa).

Holding adjusting screw (C) with 3/16 inch screw key, use wrench to tighten jamnut

(D).

Install adjusting screw cap (B) using wrench.

Remove pressure gage.

Using 5/16 inch screw key, install plug (A) and tighten.

End of Task

TA251477

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